Cylinder-press.



No. 684,224. Patented Oct. 8, I90l.

H. A. GRANDY.

I CYLINDER PRESS.

{Application filed Mar. 5, 1901.)

3 Sheets-Sheet I.

(No Model.)

9 2 4 7 6 2 i m MI ||ll dqw wl I ll! It m M 1M |0 n .il i W w I I 0 5 aNo. 684,224. Patented Oct. 8, l90l. H. A. GRANDY.

CYLINDER PRESS.

(Application filed Mar. 5, 1901.)

(No llndal.)

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QYO-UTHQ, WAsHANGYON n c No. 684,224. Patented Oct. 8, I901; H. A.GRANDY.

CYLINDER PRESS.

(Application fllod Mar. 6, 1901.)

3 shuts-sum a.

(No Model.)

E E 5 E r H w UNITED STATES PATENT OFFICE.

HENRY A. GRANDY, OF SOMERVILLE, MASSACHUSETTS.

CYLINDE R-PRESS SPECIFICATION formingpart of Letters Patent NO. 684,224,dated October 8, 1901.

Application filed March a, 1901.

T0 aZZ whom it ntay concern:

Be it known that I, HENRY A. GRANDY, of Somervi'lle, in the county ofMiddlesex and State of Massachusetts,have invented certain new anduseful Improvements in Cylinder- Presses, of which the following is aspecification.

This invention has relation to paper-gripping mechanism forcylinder-presses; and it consists of certain improvements therein, whichare illustrated upon the drawings, de scribed in the followingspecification, and pointed out in the appended claims.

Referring to the accompanying drawings, which form part of thisspecification, Figure 1 represents in end elevation a paper-feedingmechanism. Fig. 2 represents a plan view of the same. Fig. 3 representsa plan view of the gripper and finger mechanism. Figs. 4, 5, 6, and '7illustrate the operation of the finger and gripper mechanism. Fig. 8shows in detail the means for adjusting the cam in the finger andgripper mechanism.

On the drawings, 10 indicates the hollow impression-cylinder, whichrotates with the shaft 11, upon which it is secured. This cylinder isformed of a shell with suitable ends. The shaft 11 is journaled upon aframe 12, which rises from the top of the press. Upon the cylinder atone end thereof are gear-teeth 13, intermeshing with teeth on theform-cylinder, (not shown,) by which the shaft 11 receives its rotation.The peripheral skin of the cylinder 10 is cut away, as indicated at 15in Figs. 1 and 2, to receive the gripper and finger mechanism, the edge1 1 serving as a member of the clamp of which the gripper is the othermember. In the said recess or cutaway portion 15 there is passed arock-shaft 16, to which at regular intervals are secured grippers 1'7.The grippers are adjustable along the shaft, each having a hub throughwhich a set-screw 18 is passed into engagement with a clamping-block1.9,placed in a groove in the hub and bearing against the shaft. Thepurpose of the grippers and the mechanism which operates them is toclamp the edge of a sheet of paper so that the paper will be rotatedwith the impression-cylinder a plurality of times in contact with theprinting-plates on the form-cylinder, whereby the Serial No. 49,962. onmodel.)

The impression-cylinder rotates in peripheral unison with theform-cylinder, and the number of rotations which it receives may bevaried in accordance with the number of colors which are to be printedupon the paper or the number of plates on the form-cylinder. Hence thegripper mechanism is actuated once during a predetermined number ofrotations of the impression-cylinder.

The rock-shaft 16 is equipped on its end with a pinion 20, intermeshingwith a seg mental rack 21, fulcrumed at 22 on the head of the cylinder10. The gear-segment has a projecting end, to which an extension 23 ispivoted between its ends, as at 24:. On the end of the extension or part23 there is a roll 26, which bears upon a disk 27, loose upon the shaft11, a screw 25 being passed through said extension and bearing againstsaid extension for the purpose of adjusting the roll relatively to thedisk. The disk is held against rotation; but as the cylinder revolvesthe roll 26 sweeps around the periphery of the disk. The said disk has agroove or de-' pression 29, extending part-way across its periphery,Fig. 1, in which the roll 26 is adapted to drop when the disk is slidlongitudinally or axially into the position shown in Fig. 2 to permitthe oscillation of the segmental lever first in one direction and thenin the other and the consequent rocking of the shaft 16. The disk or cam27 is normally in position to prevent the roll 26 from drop ping intothe groove 29, and thereby hold the segmental gear 21 againstoscillation; but it is moved once for each predetermined number ofrotations of the paper-cylinder to permit the roll 26 to drop into thedepression and permit the actuation of the rock-shaft 16 and thegrippers 17.

The mechanism for sliding the disk 27 includes the centrally-pivotedlever 28, having a trundle-roll in engagement with a pathcam 291 upon ashaft 30, which through the medium of gears 31 and 32 is rotated by theshaft 11.. The path-cam 291 is so formed that the lever 28 is oscillatedto slide the disk 27 into the position shown in Fig. 2 once for eachrotation thereof, and as the ratio of the gears 32 31 is shown in thedrawingsas one is to six it will be seen that the gripper rockseveralcolors may be printed upon the paper.

shaft 16 will be actuated once' for each six rotations of theimpression-cylinder. As is obvious, said path-cam may, however, be soconstructed as to cause the actuation of the lever 28 more than onceduring each six rotations of the gripper rock-shaft, according to thenumber of jobs being printed-that is to say, if the mechanism beemployed upon a color-press, such as described in the patent to me, No.484,421, dated October 18, 1892, in which a plurality of color-platesare used for different colors, the gripper rock-shaft may be actuatedonce for each color-plate or once for a predetermined number of platesand a series of jobs be printed with different single colors or with twoor more colors, as may be desired.

Normally the grippers are in the position shown in Fig. 4, so that theytake over the clamping-surface 14 in position to clamp the paperthereagainst. Consequently when the rock-shaft is actuated it is for thepurpose of raising the grippers relatively to the surface 14 and topermit the releasing of the printed sheet and the gripping of asubstitute sheet. In addition to the grippers, however, I provideshoo-fiy fingers for initially raising the edge of the sheet to permitits delivery from the roll. These fingers are indicated at 33, and thereis preferably a pair of them for each gripper 17. They are rigidlysecured to a shaft 34, rigidly secured in collars 35, loose upon therock-shaft 16. Set-screws 36, set in the collars 35, rigidly secure themto the shaft 34. Secured to the shaft 34 there is a lever 37, to one armof which is attached a helical spring 38, having its other end securedto a convenient projection in the interior of the cylinder 10. Thefunction of this spring is to hold the fingers tightly upon theclamping-surface 14 during a portion of the movement of the rock-shaft16. To the longer arm 39 of the lever 37 there is adjustably attachedthe shank of a hook 40, which is curved in the are of a circleconcentric with the rock-shaft 16. On a collar 41, adjacent the lever37, there is a latch 42, adapted to engage with the hook. The collar 41is rigidly secured to the rock-shaft 16, and as the shaft rotates thelatch moves into contact with the hook, being held outwardly against theshank of the hook by a spring 43. By adjusting the shank of the hookupon the extension 39 the length of movement of the latch prior to itsengagement with the hook may be varied, as will be understood.Consequently during the initial rotation of the rock-shaft 16 thefingers which are secured to the rock-shaft 34 remain stationary; but

when the latch engages the hook the shaft 34 and the collars 35 arecarried around a short distance with the shaft 16 until the latch isdisengaged from the hook, during which time the fingers are raised fromthe clamping-surface 14. For the purpose of disengaging the latch fromthe catch I employ an adjustable cam 44, which is affixed to thecylinder-head 45, as shown in Fig. 3. This cam has an inclined orbeveled surface against 7 which the extension on the side of the latchmay engage, the cam itself being curved in the arc of a circle, so thatas the latch continues its movement it will be held from again engagingvthe hook, but will be snapped quickly back into position by the spring38. The cam is formed upon a collar 46, loose on the shaft 16, but heldin any desirable position by a clamping-screw 47, passed through a slot48 in the cylinder-head and adapted to engage any one of a plurality ofapertures in the said collar.

The operation of the device is as follows:

crum to move the cam-disk 27 into the posi-' tion shown in Fig. 2 topermit the depres- At the proper s'ion of the roll 26 and the consequentrock- 7 ing of the segment 21 and the partial rotation of the shaft 16.\Vhen the shaft commences its rotation, the grippers are swung from theposition shown in Fig. 4 to the position shown in Fig. 5 before thelatch engages the hook, the fingers remaining during this time upon theclamping-surface 14. As the rock-shaft continues its movement the partsIO) I assume the positions shown in Fig. 6, where in the latch isindicated as just disengaged from the hook. During this slight movementof the hook by reason of its engagement with the latch the fingers havebeen raised to the position shown in Fig. 6 to lift the edge of thepaper and permit the access of air '1 therebeneath, so that thestrippingof the paper from the impression-cylinder is easilyaccomplished by the delivering mechanism. AL

though the fingers at this time, the latch havin g been disengaged fromthe hook, return to original position, yet the grippers are not re- 7turned until the gear-segment 21 is oscillated in the other direction,and consequently time is given for the insertion of the edge of anothersheet of paper in proper position for the grippers to engage it andclamp it against clamping-surface 14.

The mechanism thus described, while particularly applicable for machinesof the type illustrated in the said patent to me,l\ 'o.484,421,

may be employed with facility for presses of other types. 1

Having thus explained the nature of the ing and using the same, althoughwithout attempting to set forth all of the forms in which it may be madeor all of the modes of its use, I declare that what I claim is- 1. Thecombination with a cylinder, grip- I25 1 invention and described a wayof construct- V V 7 per mechanism includinga row of grippers" forgripping the edge of a sheet of paper; means actuated by the grippingmechanism for raising said edge to discharge said sheet; andprovisionswhereby said means are not actuated until said grippers have been moveda considerable distance to inoperative position.

2. The combination with a cylinder having a clamping-surface, of a rowof grippers coacting with said surface, fingers actuated by said row ofgrippers for raising the edge of the paper from said surface, after saidgrippers have been moved to inoperative position; and provisions wherebysaid fingers remain inactive during theinitial movement of saidgrippers.

3. The combination with a cylinder having a clamping-surface, of arock-shaft having grippers coacting with said surface, paperliftingfingers supported upon and actuated by said rock-shaft, and provisionswhereby said fingers remain inactive during the initial movement of saidgrippers.

a. The combination with a cylinder having a clamping-surface, of arock-shaft having grippers coacting with said surface, paperliftingfingers, and hook-and-latch mechanism between said fingers and saidshaft.

5. The combination with a cylinder having a clamping-surface, of anoscillatory gripper coaeting with said surface, a paper-raisingfinger,and means for intermittingly connecting said finger to said gripper,each time a gripper is actuated.

. 6. The combination with a cylinder having a clamping-surface, of agripper coacting with said surface to clamp the edge of a sheet ofpaper, a finger adapted to raise said edge from said surface, means forraising said gripper from and lowering it toward said surface, and meansactuated by the gripper-operating means for raising said finger afterthe gripper is raised and lowering it before said gripper is lowered.

7. The combination with a cylinder having a clamping -surface, of agripper coact-ing with said surface to clamp the edge of a sheet ofpaper, a finger adapted to raise said edge from said surface, of meansfor imparting an opening and closing movement to said gripper, and meansoperated by the gripper-0perating means for actuating said finger toraise the edge of the paper when the gripper is open. v

8. The combination with a cylinder having a clamping-surface, of arock-shaft having a gripper, a paper-raising finger, a hook to engageand actuate said finger, and a cam to disengage said finger from saidhook.

9. The combination with a multicolor rotary form-cylinder, of apaper-feeding cylinder geared thereto and having a clampingsurface,grippers coacting with said surface, a gear and segment for actuatingsaid gripper, a movable cam adapted to coact with said segment tooperate it, a shaft geared to said paper-feeding cylinder, and a cam onsaid shaft and lever mechanism coacting with said second-mentioned camfor moving the firstmentioned cam, to cause the operation of saidgrippers a predetermined number of times for each rotation of said formcylinder.

In testimony whereof I have affixed my signature in presence of twowitnesses.

HENRY A. GRANDY. Witnesses:

A. D. HARRISON, GEORGE PEZZETTI.

